FOUR SEASONS 38QZMDKJ Blower Motor Relay

( Brand: Four Seasons ), ( Manufacturer Part Number: 38QZMDKJ ), ( Part Type: Blower Motor ), ( Compatible Make/model: Chevrolet S10 Blazer ), ( Compatible Years: 1988 1985 1986 88 85 86 ), ( Fitment Info: Hvac Blower Motor Relay 4 Blade Term. ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Read Full Description To Confirm Fitment ), ( Cs-sku: 400 )

Review FOUR SEASONS Blower Motor Relay Chevy fits BLAZER S10 1985–1986

The **Seasons 38QZMDKJ Blower Motor Relay** is a precision-engineered electrical component designed specifically for the **1985 1986 Chevrolet S10 and GMC Blazer** models, ensuring seamless operation of the vehicle s climate control system. This high-quality relay is built to replace the factory unit, which may fail over time due to wear, electrical corrosion, or environmental exposure, leading to issues like intermittent blower motor function, complete failure of the heating or air conditioning system, or erratic fan speeds. Crafted with durable materials, the relay features a robust **SPDT (Single Pole Double Throw)** switching mechanism, allowing it to effectively control the power flow from the vehicle s fuse box to the blower motor resistor, enabling smooth transitions between fan speeds. Its compact yet sturdy design ensures a secure fit within the dashboard or under-hood relay tray, minimizing the risk of misalignment or improper engagement. Whether replacing a faulty original relay or upgrading for enhanced reliability, this aftermarket part is engineered to meet or exceed OEM specifications, providing consistent performance in all driving conditions. Ideal for DIY enthusiasts and professional mechanics alike, the Seasons relay is a straightforward, plug-and-play solution that restores proper climate control functionality to these classic trucks and SUVs, ensuring comfort and efficiency for years to come.

### Pros and Cons of buying a **38QZMDKJ Blower Motor Relay for 1985-1986 Chevy S10/Blazer**

1. **Direct Fitment** This relay is specifically designed for the 1985-1986 Chevy S10 and Blazer models, ensuring compatibility without modifications. It replaces the factory blower motor relay, which may fail over time, causing issues like no airflow or intermittent fan operation.

2. **Reliability** A high-quality relay reduces the risk of electrical failures, such as blown fuses or damaged wiring, which can occur if the original relay wears out or corrodes. This helps prevent further damage to the blower motor or other components.

3. **Easy Installation** Relays are simple to replace, typically requiring only basic tools (screwdriver, wire cutters, and possibly a multimeter for testing). No wiring harness modifications are usually needed, making it a straightforward DIY repair.

4. **Cost-Effective** Replacing a faulty relay is significantly cheaper than repairing or replacing the entire blower motor assembly, which can cost hundreds of dollars. This part is a low-cost solution for a common issue.

5. **Prevents Further Damage** A failing relay can cause erratic electrical surges, potentially damaging the blower motor or other electrical components. Replacing it early can extend the lifespan of related systems.

6. **Aftermarket Support** Many aftermarket relays are backed by warranties or positive reviews, ensuring you re getting a functional part. Brands like **Dorman, Motorcraft, or local auto parts stores** often carry reliable options.

7. **Improved Functionality** If the original relay was failing intermittently, replacing it ensures consistent blower motor operation, improving comfort and preventing inconvenience during use.

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1. **Potential Counterfeit or Low-Quality Parts** Some online marketplaces (especially third-party sellers) may offer knockoff or subpar relays that fail quickly. Buying from untrusted sources risks wasting money on a defective part.

2. **Mismatched Specifications** While this relay is designed for your vehicle, slight variations in pinout or electrical requirements could exist if the part is not an exact match. Always verify the part number and pin configuration before purchasing.

3. **Diagnostic Confusion** If the issue isn t actually the relay (e.g., a bad blower motor, fuse, or wiring problem), replacing the relay without proper testing may not resolve the problem, leading to frustration.

4. **Limited Availability** Depending on the seller, stock may be inconsistent, especially for older model-specific parts. Some retailers may not carry this exact relay, requiring additional searching or ordering.

5. **Basic Skill Requirement** While installation is simple, those unfamiliar with electrical systems may struggle with testing the relay or diagnosing why it s not working post-installation. Basic troubleshooting knowledge is helpful.

6. **No Guarantee of Longevity** Even high-quality relays have a finite lifespan. If the relay fails again shortly after installation, it may indicate an underlying issue (e.g., moisture in the wiring harness, corrosion, or a failing blower motor).

7. **Potential for Overkill** If the relay failure was due to a minor issue (e.g., a loose connection), replacing it may not address the root cause, leading to repeated problems if the original condition persists.

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The **38QZMDKJ blower motor relay for your 1985-1986 Chevy S10/Blazer** is a practical and cost-effective solution for a common electrical issue. Its direct fitment, ease of installation, and reliability make it a strong choice for restoring proper blower motor function. However, the risk of purchasing a counterfeit part or misdiagnosing the problem underscores the importance of buying from reputable sources and verifying compatibility.

1. **Purchase from a trusted source** Buy the relay from a well-known auto parts retailer (e.g., **RockAuto, Amazon (verified seller), local auto parts stores, or dealerships**) to ensure authenticity and quality.

2. **Test the relay before installation** If possible, use a multimeter to check continuity and switch functionality. Alternatively, swap it with a known-good relay (e.g., from another relay in the vehicle) to confirm it s the culprit.

3. **Inspect related components** While replacing the relay, check the blower motor fuse, wiring harness, and motor itself for signs of wear or damage. Clean corroded connections if needed.

4. **Consider a multimeter for future diagnostics** If you re comfortable with basic electrical testing, investing in one will help you diagnose similar issues in the future.

5. **Document the process** Keep records of the part number, installation steps, and any symptoms you observed before replacement. This helps with troubleshooting if the issue persists.

**Final Verdict:** This relay is a **worthwhile purchase** for most owners experiencing blower motor relay failures, provided you source it carefully and verify the problem before installation. For those uncomfortable with electrical work, consulting a mechanic may be advisable to ensure the relay is indeed the issue.

Details:

Four Seasons Blower Motor Relay fits Chevy S10 Blazer 1985 - 1986 38QZMDKJ: Brand: condition: New Notes: HVAC 4 Blade Term. Vehicle specific applications. Product Specifications Amperage Rating: 20. Color: Black.

Precision engineered. Standard Relay. Detailed Applications Years: Vehicle: 1985 - 1986 Chevrolet S10 Blazer. 12 Month Warranty.

Features:OE molded connectors. Quality contacts ensure proper conductivity.

part #: 38qzmdkj price

• $36.11

specifications chvyblowermotor:

• for models: S10, Blazer
• for makes: Chevy
• for years: 1985-1986
• brand: Four Seasons
• mpn: 38qzmdkj
• part type: Blower Motor
• compatible make/model: Chevrolet S10 Blazer
• compatible years: 1988 1985 1986 88 85 86
• fitment info: Hvac Blower Motor Relay 4 Blade Term.
• manufacturer warranty: 12 Month Warranty
• attention: Read Full Description To Confirm Fitment
• cs-sku: 400

payments chvyblowermotor:

• credit card: Diners-club
• wallet: Apple-pay
• other

general chvyblowermotor:

• condition: New
• Air Conditioning Heating > Blowers Fans > HVAC Blower Motors Wheels

offer chvyblowermotor:

• options: Ship-to-home
• sold: 0
• quantity: 1
• availability: In Stock
• started: April 4, 2026

shipping chvyblowermotor:

• transit: 5-8 Days
• service: Economy
• cost: $0.00
• class: Economy
• type: Fixed

returns chvyblowermotor:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

seller chvyblowermotor:

• # reviews: 23754
• rating: 99.1%
• city: Carlisle, Pennsylvania

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